Locking-latch



(Model.)`

Patented July 12 N. FUERS, Mm, www D. a

(Model.) 2 Sheets-Sheet 2.

l A.v RAND. LOOKING LATCH.

10.244,298. Patented July 12,188,14.

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UNITED STATES V PATENT OEEioE.

l ANDERS RAND, OF GALVESTON, TEXAS.

LOCKING-LATCH.

SPECIFICATION forming part of Letters Patent No. 244,298, dated July 12,1881. Application filed February 7, 1581. (Model.)

To all rwhom it may concern:

Be it known that I, ANDERS RAND, of Gralveston, in the county ofGalveston and State` of Texas, have invented certain new and usefulImprovements in Locks and l do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, which form apart of this specification, and in which- Figure 1 is a plan view of oneof my improved locks with its attachments and key, the covering-platesbeing removed for the purpose of better showing the construction. Fig. lis a detailed view, showing more fully the tumblers L. Fig. 2 is asectional view on the line x a', Fig. l.V Fig. 3 is a sectional view onthe line yy, Fig. 2. Fig. lis a detail view of the bolt detached.

Corresponding parts in the several figures are denoted by like lettersof reference.

This invention relates to locks; and it consists in certain improvementsin the construction ofthe same, which will be hereinafter fullydescribed, and particularly pointed out in the claims.

In the drawings hereto annexed, A represents the case of the main lock,in which the main bolt B has a lon gitudinally-sliding movement. Thesaid bolt consists of two parts or sections, C D, (see Fig. 3,) unitedby screws E, and by means of the cap F, which is secured upon the outerend of the bolt by means of screws or rivets. The said bolt is providedwith a longitudinal slot, G, in which is adjusted the mainspring H,which works against a stud,I, projecting from the bottom of the case,and which tends to force the bolt in an outward direction to engage thejamb of the door.

J J are studs projecting from the bottom of the case,one on each side ofthe bolt, as shown, and provided with threaded openings to receive thescrews bywhich the coveris secured upon the case. Upon the said studsare pivoted tumblers K K L, the former of which work above and below,and the latter, L, in slots M in the sides of the bolt. These tumblersare provided with suitably-arranged springs N, by which theirfront ends,which are provided with hook-shaped projections O, are held against thepins or studs P in bolt B, near the front end of the latter. The bolt isat this pointprovided with a longitudinal slot, Q-the keyslotthe sidesof which have correspondinglyshaped recesses B, to admit the bit of thekey when the latter is turned for the purpose of operating the bolt.

The tumblers L extend some distance back of the fulcrum pins or studs J,for the purpose of engaging notches S in the front ends of levers T T,pivoted at the sides ofthe bolt, near the rear end of the latter. Theoperation and function of these levers will be hereinafter described.

The rear end ofthe bolt is provided with a slot or opening, U, toaccommodate the eccentric V of the spindle W, by which, when unlocked,the bolt is operated in the same manner as ordinary door-locks now ingeneral use. It will be observed, however, that when the bolt is locked,as in Fig. 1, the eccentric is accommodated in the rear part of the slotor opening U, which is just of sufficient width for this purpose, thuspreventing the spindle from being turned by force.

One of the principal features of my invention,fully illustrated in Fig.1of the drawings, but equally applicable to the several modications of myinvention which are to be hereinafter described, consists in thecombination, with the main lock, of one or more supplementary locks inthe top, bottom, and sides of the door, operated by and governed by theaction ofthemainlock. Ofthese supplementarylocks (which are bypreference arranged at the top and sides, inasmuch as the mortise forthe bolt of a bottom lock would be liable 'to be clogged by sand anddust) I have in the drawings shown two, (denoted respectively by X andY.) Each consists of a simple bolt, Z, forced in an outward direction bya suitably-arranged spring, A. The bolt of the upper lock, X, isconnected by a chain or wire, B', with a rod, C', pivoted to the frontend of one of the levers T, above referred to. A similar rod, C',

pivoted to the front end of the other lever, T,

is connected by a chain or wire, D', with a slide, E', workingin therear end of the caseof lock Y, and operating the bolt of said lockthrough the medium of a bell-crank lever, F'.

IOO

The rear ends of the levers T T are curved toward each other behind themain bolt, as

shown, so that when the said main bolt is oper-l ated by the spindle andeccentric or cam it shall force the rear ends of said levers apart, thuscausing their front ends to operate the bolts of looks X Y through theintermediate mechanism just described. At G', Fig. 1, I have shown thekey of the abovedescribed lock, which is provided with a double bit, oneside of which, H', is provided with two incisions eXtendin gto thehandle, and forming three prongs, I', for operating the tumblers K K Lon one side of the bolt. The length of said prongs is, of course, madeto correspond to the shape of the tumblers, which in different locks areof different width. The other side, J', of the bit has similarincisions, but of less depth, this side being intended to move the bolt.Suitable key-holes are, of course, provided in the case.

The operation of the lock is as follows: Assuming it to be locked, thekey should be inserted with the side J of the bit toward the cap of thebolt. A half-turn of the key forces the tumblers K K L back from thepins or studs l? and moves the bolt a short distance back, and causesthe hook-shaped projections of the tumblers, when the latter, by theaction of their respective springs, are returned to their originalposition, to assume a position in front of the pins I. The bolt is nowunlocked, and may be operated by the spindle and cam. When thus operatedthe levers T T are operated by the bolt, as above described, causingtheir front notched ends to engage the rear ends of the tumblers L, bywhich they are held, thus retaining the bolts of the locks X and Y- inan unlocked position, leaving the main bolt B alone to be operated, inthe manner of an ordinary door-lock.

To lock, the operation is simply reversed. Tumblers L are disengagedfrom T, tumblers K K L forced back, and the main bolt moved forward, allby a half-turn of the key.

It is obvious that instead of the three tumblers K K L on each side ofthe bolt, any desired number may be used without affeetin g the spiritof my invention.

This lock, while simple in construction, is durable and eminently safe.

By interchanging the tumblers K K and L, a single set of patterns willanswer for a large number of locks.

My improved locks, as will be seen from the foregoing, are simple,inexpensive, durable, and eminently safe. They are applicable to doors,drawers, cabinets, and the like; may, without modification, Vbe used asright or left hand locks, and when combined with supplementary locks, asherein described, obviate all necessity of separate latches ordead-locks, all the functions of which they perform in a moresatisfactory manner.

Having thus described my invention, Iclaim and desire to secure byLetters Patent of the lUnited Statesl. In a latch, the combination, withthe sliding-bolt B,tumblers K K L, having their forward ends providedwith hooks or ri ght-an gled projections adapted to engage studs uponthe bolt, and the lever T, operated by the bolt and having its forwardend adapted to engage with the tumbler L, of the supplementary lock having its operating mechanism connected to the lever T, substantially asand for the purpose set forth.

2. In a latch, the combination of the spindle W and its eccentric or camV, the sliding bolt B, tumblers K K L, having their forward endsprovided with rightangled projections or hooks adapted to engage studsupon the bolt, thelevers T, operated bythe bolt, and with their forwardends adapted to engage with the tumblers L, and the supplementary locksX Y, with their operating mechanism connected to the levers T,substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto aftiXedmy signature in presence of two witnesses.

ANDERS RAND.

Witnesses W. M. STRATTON, J AMES S. BURNS.

